27144205806 has 32 divisors (see below), whose sum is σ = 54484768800. Its totient is φ = 9015382656.

The previous prime is 27144205789. The next prime is 27144205807. The reversal of 27144205806 is 60850244172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27144205807) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3340060 + ... + 3348176.

It is an arithmetic number, because the mean of its divisors is an integer number (1702649025).

Almost surely, 2^27144205806 is an apocalyptic number.

27144205806 is an abundant number, since it is smaller than the sum of its proper divisors (27340562994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27144205806 is a wasteful number, since it uses less digits than its factorization.

27144205806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10068.

The product of its (nonzero) digits is 107520, while the sum is 39.

Adding to 27144205806 its reverse (60850244172), we get a palindrome (87994449978).

The spelling of 27144205806 in words is "twenty-seven billion, one hundred forty-four million, two hundred five thousand, eight hundred six".